| abstract |
A metal complex pigment, which is characterized by including a ligand LL1 having a structure shown in the following general formula (I). [ In general formula (I), R<SP>1</SP> and R<SP>2</SP> represent specific substituents. L<SP>1</SP> and L<SP>2</SP> are selected from at least one of vinylidene, ethynylene and arylene, and are conjugated with R<SP>1</SP>, R<SP>2</SP> and bipyridine, wherein vinylidene and arylene may be substituted or unsubstituted. R<SP>3</SP> and R<SP>4</SP> represent substituents. n1 and n2 represent integers of 0 to 3, and A<SP>1</SP> and A<SP>2</SP> represent acidic group or its salt. n3 and n4 represent integers of 0 to 3. ] |